Converting String to Long

Here's an example that shows parsing of string to Long:

fun main(args: Array<String>) {
  val str="123"
  print(str.toLong())
}

When you run the preceding code, you will see this output:

123

If you don’t want to deal with the exceptions, you can use .toLongOrNull(). This method parses the string as a Long and returns the result, or null if the string is not a valid representation of a number.